Verge X20

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Human-Powered Flight

Some people just like to go fast, really fast. If that’s what gets you going, we’ve got your bike — in a nice portable package so you can get your speed fix no matter where you are.

New! Kinetix Pro X wheels & Tarsus hydroformed fork.

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N-Fold Technology

The Faster Fold

Folding bicycle design hasn’t changed much in decades. N-Fold Technology is a small but important change that results in a faster, and more compact fold. N-Fold Technology includes new frame and handlepost geometries and spins the front wheel by 180 degrees before the central fold, resulting in a package 40 mm (1.5") shorter. Using N-Fold technology, our bikes are only very slightly larger than the typical small wheel folding bicycle. Bicycles with N-Fold technology can also be folded – easily – in less than ten seconds.

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OCL Joint

Stronger, Better, State of the Art

The OCL Joint is a new reference in folding frame technology. It includes two new patents and everything we know about making the safest, strongest, and most durable frame joint.

  • Stronger, Stiffer — Making the hinge taller and moving the pivoting surfaces outward from the center axis more than doubles overall strength and stiffness and it’s a difference you’ll feel from your very first ride.

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Stronger by Design

Folding bikes have a sometimes deserved reputation for flexy frames. All Tern frames feature patented DoubleTruss technology which turns the rear half of the frame into a three dimensional truss so that it’s much more resistant to torsional forces.

Traditional bike frame seat stays start at the seat tube to create the rear half of the bike. On Tern bikes, the seat stays form a rigid triangle with the seat tube to fashion a continuous structure that extends to the rear axle.

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Tarsus Fork

Hydroform Meets Function

The Tarsus fork uses a single piece of hydroformed tubing that is shaped to form the fork blades, shoulder and crown. Hydroforming allows us to optimize wall thickness and align metal grain structure for a fork that is light AND incredibly strong.

Plus we’ve built in internal wire routing so you can send power from a dynamo hub up to your light right inside the fork blade. And we made the front Magnetix mount serviceable so in the unlikely event that something goes wrong, it can be replaced.

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Physis 3D Handlepost

3D-Forged = Even Stronger, Stiffer, Better Ride

Flexy handleposts and noodly handling are the Achilles heel of many folding bicycle designs. The Physis 3D handlepost solves this with a massively strong, precision machined design that virtually eliminates flex. The Physis is 3D-forged from a single piece of aluminum, eliminating welds to give a stronger, lighter, and more cost-effective part.

The Physis uses four patented technologies and is 100% serviceable, so all parts can be replaced if needed. It has igus™ bearings for smooth operation and rubber seals to protect headset bearings.

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Syntace VRO 47 Stem

Fitted to You

The VRO 47 stem fine-tune your riding position for speed or comfort. The stem is 47 mm long (14 mm longer than the standard VRO) and it’ll go anywhere from -45 degrees to +90 degrees or even backwards if you want to reduce the reach. And it exceeds Syntace’s brutal in-house test procedures for downhill gear. Custom-built for Tern.

Syntace is a German company renowned for their incredibly light but amazingly strong stems and bars. The Syntace VRO handlebar system used on select Tern bikes allows adjustment of handlebar height and reach for perfect rider fit.

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Ashima Aero CNC Cartridge Brake Pads

Smooth Stoppers

Ashima pads are the lightest on the market and pack more tech per square mm than almost any other component on our bikes. The CNC machined pad holders are ultra light and the multi-color, multi-function pads feature patented airflow cooling and a wear indicator that shows when they need replacing. So grab a handful. It’s satisfying to know your brakes are in good hands.

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Kinetix Pro X Wheels

The New Standard

Our new Kinetix Pro X wheels set a new standard for 20" wheels. Custom 27mm rims are taller for strength and more slippery aerodynamics. Custom-forged Sapim aero spokes are straight-pull for improved durability and laced in a patented Rolf paired-spoke pattern for strength. Custom hubs feature precision CNC machined flanges for perfect spoke alignment. Individually built and tuned by hand. 1100 grams light. Tested to EN standards for strength and durability. Light, fast, AND durable.

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Schwalbe Durano Tires with RaceGuard Puncture Protection

High Mileage Diet

Schwalbe calls their Durano tires mile eaters. We think they’re right. There’s plenty to love about these tires. Dual compound construction puts harder rubber in the middle for faster rolling and grippier rubber on the sides for cornering – something normally only found on race tires. A dense 67 epi carcass and 115 psi max pressure mean low rolling resistance, while a light tread pattern makes for better handling in the wet. Plus, you get RaceGuard protection against penetration punctures. Yum, Yum. Time to eat up some road.

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General Info
Wheel Size: 20 inch wheels
Speeds: 20
Weight: 9.9 kg (21.8 lb)
Folding Time: 10 sec
Folding Size: 38 x 79 x 72 cm (15" x 31.1" x 28.3")
Frame Sizes: One size
Gear Inches: 28" - 93"
Distance: Seatpost to Handlebar: Min: 540 mm (21.2") Max: 680 mm (26.8")
Distance: Saddle to Pedal: Min: 660 mm (26") Max: 930 mm (36.6")
Suggested Rider Height: 142 - 190 cm (4'8" - 6'3")
Max Rider Weight: 110 kg (243 lb)
Frame: Verge, hydroformed 7005-Al w/ smooth TIG welding, patented OCL Joint and DoubleTruss technology, Igus bearings
Fork: Tarsus, 6061-AL, hydroformed
Handlepost: Physis 3D, 3D forged construction, 4 patented technologies
Stem: Syntace VRO 47, adjustable
Headset: Flux Pro, angular contact cartridge bearings, dual-seal technology, machined aluminum cups
Handlebar: Kinetix Pro X, double-butted 7050-Al, for VRO
Grip/Bars Tape: Ergon GS2 Leichtbau, w/ mini bar end
Saddle: Kore Road Performance
Seatpost: Stasis by Syntace, 7050-Al, hard-anodized
Seatpost Clamp: Syntace OverLock
Front Brake: Kinetix Pro X, Ashima Aero CNC cartridge brake pads
Rear Brake: Kinetix Pro X, Ashima Aero CNC cartridge brake pads
Brake Levers: Avid Speed Dial 7
Brake Cable & Housing: LiveWire 7.0, anti-compression housing, slick cables, DuPont L3 lubricant, alloy ferrules
Front Hub: Kinetix Pro X, 16H, straight-pull design
Rear Hub: Kinetix Pro X, 16H, straight-pull design, asymmetric flange
Spokes and Nipples: Sapim CX-Wing, custom forged, internal Polyax nipples
Rims: Kinetix Pro X,16H, 6061-T10 aluminum, patented Rolf paired-spoke design, sleeved joint
Tires: Schwalbe Durano, 28-406, foldable, DualCompound Silica casing, RaceGuard puncture protection, 120 psi
Shifter(s): SRAM DoubleTap, 2x10
Front Derailleur: SRAM Force, Yaw Technology
Rear Derailleur: SRAM XO
Crankset: FSA SL-K, Built for Tern, 55/42T, hollow carbon crankarms, CNC chainrings, MegaEVO BB386
Cassette/Freewheel: Shimano Ultegra, 11-28T, 10 spd
Bottom Bracket: FSA BB386
Chain: Shimano Ultegra, 10 spd
Shifter Cable & Housing: LiveWire 8.0, sealed alloy ferrules, DuPont L3 lubricant
Bell: Aluminum
Clip System: Magnetix 2.0
Luggage Socket: Yes
Rear Light: BioLogic TailLight
August 18, 2015

". . . the Verge X20 is an amazingly fast and versatile folder . . ."


Read the full article online here.
August 13, 2015

"Nach nunmehr einem Jahr, bin ich immer noch froh, das Rad zu haben und fahre es unheimlich gerne" [After a year now, I'm still glad to have the bike and really love riding it]


Read the full article online here.
December 6, 2013

"I rode one of their higher end models (the Verge x20) through the cities and countryside of Denmark, where it cruised smoothly on long distance road trips, accelerated briskly up hills, was agile in city traffic and took less time to fold than it takes me to tie my shoes."

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September 1, 2013

"Ad alcune persone piace semplicemente andare veloce, molto veloce. Con questo obiettivo Tern Bicycles ha progettato la bicicletta pieghevole Verge X20, una bici in formato portatile, che rappresenta l’evoluzione del trasporto urbano e offre la migliore soluzione per una mobilità ecosostenibile. Facile e maneggevole, ma garantita da una qualità senza compromessi abbinata ad un design innovativo."

["Some people like to ride fast, very fast. For those, Tern has developed the Verge X20, a portable bike which represents the best solution for urban mobility today. Light and convenient to handle, this bike combines uncompromising quality and innovative design."

Read the full article online here.
March 31, 2013

"The Verge X10 is an awfully quick little rig, scooting forward with each pedal stroke and maintaining a healthy clip in an efficient-feeling manner that's more befitting of a mid-ranged road bike than something intended for commuting. Perhaps most telling is the fact that we often grabbed the Verge X10 if we were running late for something (which was pretty much always)."

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January 16, 2013

"The Verge Duo seeks to marry performance, low maintenance and sleek lines, and does so extremely well. Tern have redesigned certain aspects of the frame to make them stiffer while making the fold even quicker. We were particularly impressed with the extremely strong and stiff Physis handlepost joint. The result is a bike that folds to a reasonably small size (easily little enough to pop in a train luggage rack) but is a blast for quick rides around town."

Read the full review of the Verge Duo online here.

Folding Bikes
December 13, 2012

"Like all the folding bikes in the Tern Verge Series, the Verge X20 is exceptional, a show-piece and speed demon wrapped in one. So far I have taken it on three semi-major rides and the attention it gets is hard to miss. I’m glad I can take it in with me wherever I go, because those looks of jealousy might turn on me."

Read the full article about the Verge X20 here.
December 7, 2012

"What surprised me the most, was the Kinetix pro wheelset and the stock-standard Schwalbe Durano tires. I’ve underestimated them, thinking that it was flimsy and unable to take my weight. With a Godzilla-sized rider like me, the rims and tires were able to withstand our harsh road conditions. Not only that, its capable of yielding 25km/h on the average with little effort. So, imagine if you are really fit and have the power to weight ratio. This bike will fly!"

Read the full article online here.

Men's Journal
December 1, 2012

"Setup couldn't be simpler: Flip a lever to unfasten the main body and fold the bike in half, flip a level on the handlebars to fold those down, push in the pedals, and lower the seat . . . the Verge Duo was a comfortable breeze to drive around bumpy, hill-heavy Brooklyn bike paths. Finally, at less than $1,000, it's a steal when compared with its pricier U.K.-built competitors."

Read the complete article online here.

Velo Speak
November 27, 2012

"The X20 really moves, thanks in large part to its light weight (21 lbs.), the top of the range SRAM Red drivetrain, and the specially sourced FSA crankset with custom 55/42 gearing. The handling is precise, and given the 20″ Kinetix Pro wheels, incredibly agile. It feels as if this bike has an upper hand in terms of maneuvering due to its compact size. This translates into smiles for me, and I’m quite sure I had an ear to ear grin each time I rode the bike."

Read the full article online here.